Pressure-regulator



(N o Model.)

M P. ABBE. PRESSURE REGULATOR.

Da-429,591. PatentedJunev 10,1890.

' 4 ll A Nm e a 1 lFlELv Figa,

WITN-EE 5 E5 V Inn/ENTER @warb/3mm UNITED STATES PATENT OFFICE.

MAX E. ABBE, 0E sono, NEW JERSEY.

PRESSU RE-REGU LATO R.

SPECIFICATION forming part of Letters Patent No. 429,591, dated June 10, 1890.

l Application iled March 28, 1890. Serial No. 345,679. (No model.)

line :c x, Fig. l.

The letter a represents a casing or box having an inlet a and outlet a2 that communicate with each other by water or steam way a3. Opposite to inlet a there is a tubular socket a4, within which a cylindrical plug b is free to move. This plug is provided with an arm b', projecting out of the socket, and is surrounded by a rubber packing b2. Opposite the outlet a2 there is a head c of a considerably larger diameter than plug b. This head is free to slide within the cylindrical portion a5 of the casing a, and bears against a strong coiled spring d, placed likewise within saidl cylindrical portion. UponAhead c a washer c may be placed. To the head c there is secured a screw-rod c2, placed opposite to arm b".

This screw-rod carries a sleeve or push-piece e, the free end of which is adapted to bear against arm b. The push-piece e may be adj listed by screwing up and down on rod c2, so that the distance between the push-piece and the arm b may be varied. To gain access to push-piece e, even while the apparatus is in action, the casing a is provided with an opening opposite to the push-piece. This opening may be closed by a screw-plug f.

The operation of the device will be readily understood. The water, steam, or other matter enters inlet a', passes through channel a3, and leaves at outlet a2. .It will press upon head c, which in turn, by rod c2 and pushpiece e, will press upon arm b of plug b. Thus the plug will be moved toward opening a and diminish the size of said opening to reduce the volume of water or steam admitted. 5o

Should the pressure fall beneath the desired limit the spring d will force the head c outward, and the plug b will be free to be also pushed backward by the steam or water pressure. In order to regulate the pressure it is only necessary to adjust the distance between the parts e b. The farther the push-piece e is set away from arm b the farther must vthe push-piece be moved before :it reaches the arm, and consequently before it affects the size ofthe inlet-opening.

NVhat I claim is-- The combination of casing a, having inletv and discharge openings, with a sliding plug b opposite the inlet-opening, a sliding head c opposite the discharge-opening, a screw-rod fio 

